/*
 * Copyright (c) 2017  STMicroelectronics – All rights reserved
 * The STMicroelectronics corporate logo is a trademark of STMicroelectronics
 *
 * Redistribution and use in source and binary forms, with or without modification,
 * are permitted provided that the following conditions are met:
 *
 * - Redistributions of source code must retain the above copyright notice, this list of conditions
 *   and the following disclaimer.
 *
 * - Redistributions in binary form must reproduce the above copyright notice, this list of
 *   conditions and the following disclaimer in the documentation and/or other materials provided
 *   with the distribution.
 *
 * - Neither the name nor trademarks of STMicroelectronics International N.V. nor any other
 *   STMicroelectronics company nor the names of its contributors may be used to endorse or
 *   promote products derived from this software without specific prior written permission.
 *
 * - All of the icons, pictures, logos and other images that are provided with the source code
 *   in a directory whose title begins with st_images may only be used for internal purposes and
 *   shall not be redistributed to any third party or modified in any way.
 *
 * - Any redistributions in binary form shall not include the capability to display any of the
 *   icons, pictures, logos and other images that are provided with the source code in a directory
 *   whose title begins with st_images.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR
 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY
 * AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER
 * OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
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 * OF SUCH DAMAGE.
 */

package com.st.BlueSTSDK.gui.util.InputChecker;

import android.text.Editable;
import android.text.TextWatcher;

import androidx.annotation.NonNull;
import androidx.annotation.StringRes;

import com.google.android.material.textfield.TextInputLayout;


/**
 * Class used to check that a TextInputLayout contains a valid value,
 * if not an error is shown
 */
public abstract class InputChecker implements TextWatcher {

    private TextInputLayout mTextInputLayout;
    private String mErrorMsg;

    public InputChecker(@NonNull TextInputLayout textInputLayout, @StringRes int errorMessageId){
        mTextInputLayout = textInputLayout;
        mErrorMsg = textInputLayout.getContext().getString(errorMessageId);
    }

    public InputChecker(@NonNull TextInputLayout textInputLayout,@NonNull String errorMessage){
        mTextInputLayout = textInputLayout;
        mErrorMsg = errorMessage;
    }

    @Override
    public void afterTextChanged(Editable editable) {
        String input = editable.toString();
        if(validate(input)){
            hideErrorMessage();
        }else{
            showErrorMessage();
        }
    }

    private void showErrorMessage(){
        mTextInputLayout.setErrorEnabled(true);
        mTextInputLayout.setError(mErrorMsg);
    }

    private void hideErrorMessage(){
        CharSequence currentError = mTextInputLayout.getError();
        if(currentError!=null && currentError.equals(mErrorMsg)){
            mTextInputLayout.setError(null);
            mTextInputLayout.setErrorEnabled(false);
        }

    }


    @Override
    public void beforeTextChanged(CharSequence charSequence, int i, int i1, int i2) {

    }

    @Override
    public void onTextChanged(CharSequence charSequence, int i, int i1, int i2) {

    }
    /**
     * vaidate the user input
     * @param input user input
     * @return true if the string is correct, false otherwise
     */
    protected abstract boolean validate(String input);

}
